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This calcite specimen from Santa Eulalia has a layer of calcite druzy with several larger modified rhombohedral calcite crystals perched atop
These sandstone coasters are made of Arizona Sierra sandstone sourced from central Arizona
some material can phosphoresce for several minutes
Broken or polished pieces can have lovely colors similar to low-quality petrified wood or jasper
Options A–F weigh 2–3 lbs
Inner Mongolian quartz point pair Aquamarine This calcite specimen from SantaLocale: HuangGangLiang mining district, Inner Mongolia, China Approx point length: 2. 5" Approx weight: 36g These quartz points are from HuangGangLiang, and commonly called Mongolian or Inner Mongolian quartz. This isn't your typically shiny quartz; this pair of straight points is completely coated in a grainy matte white mineral crust. Where the crust is broken off, exposed beneath is more matte white! The piece appears dull but will glitter like
